Table 1.
Cardiac MRI scan parameters.
| Echo time (TE), ms | Repetition time (TR), ms | Flip angle, ° | Band width, Hz/pixel | Field of view, mm | Matrix | Spatial resolution, mm2 | Slice thickness, mm | ||
|---|---|---|---|---|---|---|---|---|---|
| Cine MRI | True FISP (SSFP) | 1.6 | 25 | 80 | 930 | 300 × 300 | 156 × 192 | 1.9 × 1.6 | 6 |
| T2 weighted MRI | T2p-SSFP | 1.6 | 3.2 | 60 - 90 | 977 | 245 × 327 | 145 × 256 | 1.7 × 1.3 | 6 |
| T2* | T2* | † | 154 | 20 | 977 | 245 × 327 | 128 × 256 | 1.9 × 1.3 | 4 |
| EGE MRI | PSIR-FISP | 1.1 | 557 | 50 | 1000 | 300 × 400 | 108 × 192 | 2.8 × 2.1 | 6 |
| LGE MRI | PSIR turbo FLASH | 2.53 | 403 | 25 | 201 | 215 × 300 | 119 × 256 | 1.8 × 1.2 | 6 |
The T2 preparation time (TE) was 60 ms. Parallel imaging (rate 2) was used and 8 respiratory motion corrected images were obtained per acquisition.
The T2* protocol acquired 16 echoes with echo spacing 2.32 ms, with a minimum echo time of 1.58 ms and a maximum echo time of 36.38 ms (4 phase encodes were acquired per RR with 154 ms imaging duration). The PSIR FLASH had 25 views per segment.
Abbreviations: EGE = early gadolinium enhanced MRI; FISP = fast imaging in steady state precession; LGE = late gadolinium enhanced MRI; MVO = microvascular obstruction; SSFP = steady state free precession; PSIR = segmented phase-sensitive inversion recovery; turbo FLASH = fast low-angle shot.